HD404889_03 Datasheet, PDF (181/197 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

HD404889/HD404899/HD404878/HD404868 Series
A/D Converter Characteristics (HD404888, HD4048812, HD404889: V_CC=1.8V to 5.5V, GND=0V,
T_a=–20°C to +75°C; HCD404889: V_CC =1.8V to 5.5V, GND=0V, Ta=+75°C; HD4074889: V_CC=2.0V to
5.5V, GND=0V, T_a=–20°C to +75°C, unless otherwise specified)
Item
Symbol Pins
min.
typ. max.
Unit Test conditions
Notes
Analog power supply AV_CC
AV_CC
V_CC–0.3 V_CC V_CC+0.3 V
1
voltage
Analog input voltage AV_in
AV_CC-AV_SS current
I_AD
Analog input
CA_in
capacitance
AN₀ to AN₅
AV_SS
— AV_CC
V
—
— 500
µA
V_CC=AV_CC=5.0V
AN₀ to AN₅
—
15 —
pF
Resolution
—
8—
bit
Number of inputs
0
—6
channel
Absolute accuracy
—
— ±2.0
LSB
V_CC=AV_CC=2.7V to 5.5V
—
— ±3.0
LSB
V_CC=AV_CC=1.8V to 2.7V 2
Conversion time
65
— 125
t_cyc
Input impedance
AN₀ to AN₅
1
——
MΩ
Notes: 1. Connect to the V pin when the A/D converter is not used. The AV setting ranges are 1.8
CC
CC
V≤AV_CC≤5.5V (HD404888, HD4048812, HD404889, HCD404889) and 2.0V≤AV_CC≤5.5V
(HD4074889)
2. The conversion time is 125tcyc.
Rev.6.00, Sep.08.2003, page 181 of 197